Clasp for necklaces



(No Model.)

A. KELLER. CLASP FOR NECKLACES.

No. 408,308. Patented Aug. 6, 1889.

fill 676507.

N PETERS. Finale-Lithographer. Washinglnn. n. c,

ADAM KELLER, OF NEW YORK, il Y.,

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ASSIGNOR TO HIMSELF, AND JOHN C.

. DONVNING, OF NEWARK, NEXV JERSEY.

CLASP FOR NECKLACES.

SPECIFICATION forming part of Letters Patent No. 408,308, dated August6, 1889'. Application filed February 16, 1889- Serial No. 300,205. (Nomodel.)

To aZZ whom, it may concern:

Be it known that I, ADAM KELLER, of New York city, New York, haveinvented a new and useful Improvement in Clasps for Necklaces '5 andlike Articles, of which the following is such full, clear, and exactdescription as will enable others skilled in the art to whichv it mostnearly appertains to make and use the same, when taken in connectionwith the acro companying drawings, in which Figure 1 is a side view ofthe clasp in an open position. Fig. 2 is a side View of the clasp in aclosedposition. Fig. 3 is a vertical section of a modification of theclasp open.

Fig. 4 is a vertical section of a modification of the clasp closed. Fig.5 is a cross-section of the clasp in a closed position. Fig. dis acrosssection of a modification-of clasp in a closed position. Figs. 7and 8 are vertical sections of modifications. Fig. 9 is a View of amodification partially broken away to show sections. Fig. 9 is a detailof the same. Fig. 10 is a view of a modification partially broken awayto show sections.

2 5 This myinvention relates to clasps for necklaces and similararticles of jewelry; and it consists of two barrels, one of which fitswithin the other, and a pin on a pivoted arm which passes through thetwo barrels and holds them together, and the various combinationshereinafter specified.

Heretot'ore and before this my invention great difficulty has beenexperienced in making a clasp for necklaces which would be se- 3 5 cureand at the same time present a good appearance and be readily adjustedto the wearer.

The clasp consists of the barrel A, to one end of which, as at 1, an endof the necklaceis 0 secured. The barrel A is hollow, open at one end, asat 2. Pivoted at or near one end of the barrel A, as at 3, is the arm B,carrying the pin 0. A hole D is made through the barrel B, at rightangles to the axis of it,

5 through which the pin 0 may freely pass when the armB is brought downon the barrel A. To the other end of the necklace is secured the plungeror barrel P, of such size as to fit within the barrel A. This has a holeQ through it, at right angles to the axis, which corresponds with thehole D in the barrel A when the two barrels are slipped one within theother in aclosed position, so that the pin 0 on the arm B may passthrough both barrels A and P. The barrel A has a slot lengthwise of it 55 on the upper side, as shown at Fig. 5, and the barrel P has a ridgeorfeatherlengthwise of it fitting in the slot in the barrel A when theyare in a closed position, as shown in Fig. 5.

. The feather and slot prevent the clasp being put together in a wrongmanner. The feather and slot may, however, be omitted, as shown in Fig.6; but there will then, of course, be nothing to prevent the barrel Pfrom being put in upside down. The clasp may be used in this form, thefriction atthe pivot-hinge 3 keeping the pin in position in thecorresponding holes in the two barrels A and P when closed. To make theclasp more secure I may put within the barrel A the spiral spring S,(shown at Fig. 3,) attached at one end to the barrel A and at the otherto the butt or buffer T, which latter is free to move along the barrelA, being normally in the position shown in Fig. 3 opposite the hole I),so as to intercept or block the same until removed by the introductionof the barrel P within the barrel A. Then the butt and spiral spring areused, the pin 0 has a projection or catch a on its side to take on theside of the hole in the barrel P when it is pressed against pin C by thespiral spring S. The barrel P is made hollow, as shown in Figs. 4 and 5,or a recess is made for the projection c on the side of the pin 0 toenter, as shown in Fig. 7, or the projection c is so placed on the pin 0that it catches below the barrel P, as shown in Fig. 8. The buffer T andspiral spring S may be omitted and a spring-catch put 011 the pin C, asshown in Fig. 9, which will catch on 0 the inside of one of the barrelsA or P, as shown in Fig. 9, part of which is in section to show the pin0 with the spring-catch on it. A detail of the pin with a spring-catch'is shown in Fig. 9. Instead of the spring-catch on the pin 0 the pinmay be held inits closed position by a spring V at or near thepivotjoint of the arm B, as shown in Fig. 10, when a plain pin 0 may beused. a

The mode of operation is as follows: The

arm B is raised, the barrel P is pushed into the barrel A until the holeQ and hole D correspond with one another,when the-arm B is lowered andthe pin 0- is passed through the holes in the two barrels. If themodification of Figs. 3 and 4 having the buffer T and spiral spring S isused, the barrel P when it enters A forces the buffer T farther into thebarrel A, compressing the spiral spring until the holes Q and Dcorrespond with one another, when the arm B is lowered and the pin 0 ispassed through the holes in the two barrels, thepin 0 being locked inthat position by the projection c 011 the pin 0 taking in a a recess inthe innerbarrel P,which is pressed against it by the action of thespiral spring S, or the pin 0 is held in position by the spring-catchshown in' Fig. 9 or by the spring V shown in Fig. 10.

That I claim as new, and desire to secure by Letters Patent, is-

1. The combination, in a clasp, of two barrels, one of which fits withinthe other, having corresponding holes through each, and a pinon apivoted arm, which passes through the two barrels and holds themtogether, substantially as specified.

2. The combination, in a clasp, of two barrels, one of which fits withinthe other, and having corresponding holes through each, a pin on apivoted arm, which passes through the two barrels, and a spring toretain the pin in the hole, substantially as specified.

3. The combination, in a clasp, of an outer barrel having a hole throughit at right angles to the axis, and a buffer T on a spiral spring withinthe same, which normally closes the hole, substantially as described.

4. The combination, in a clasp, of an outer barrel provided with abuffer and spring and an inner barrel fitting within the outer barrel,the two barrels having corresponding holes through each, and a pin 0 ona pivoted arm, substantially as specified.

5. The combination, in a clasp, of two barrels, one of which fits withinthe other, having corresponding holes through each, the

outer barrel having a longitudinal slot and the inner barrel a featherto fit into the slot, and a pin on a pivoted arm, and a spring to retainthe pin in the corresponding holes through each barrel, substantially asspecified.

ADAM KELLER. Witnesses:

G. G. FRELINGHUYSEN, JOSEPH J. SULLIVAN.

